Relay system



D66; 15, 1931. M, 5150; ET AL 1,836,092

RELAY SYSTEM Filed Dec. 17. 1927 Patented Dec. 15, 1931 UNITED STATES PATENT OFFICE MARTIN SIEDE AN D FRITZ LUIBBERGER, OF BERLIN, GERMANY, ASSIGNORS TO SIEMENS &; HALSKE AKTIENGESELLSCHAIT, OF SIEMENSSTADT, NEAR BERLIN, GERMANY RELAY SYSTEM Application filed December 17, 1927, Serial No. 240,659, and in Germany April 25, 1927.

The invention relates to telephone sys tems, especially to a circuit arrangement for receiving current impulses.

Arrangements have already become known tor receiving current impulses, in which the impulse receiving relay is provided with several windings, which are so switched over in local circuits during the impulse transmission that the operation of the relay is assisted. These arrangement, however, require a considerable amount of switching devices and they are therefore comparatively expensive.

The aim of the invention is to bring about a simplification of such arrangements, this being achieved by providing the impulse recelving relay with several. windings, of which one is affected by the charging and discharging currents of a condenser and assists the operating of the relay.

The drawings show by way of example, two methods of carrying out the invention. In the Fig. l is shown an impulse repeater for telephone systems with automatic working, of which, however, only those devices and circuits are shown that are essential for understanding the invention. The Fig. 2 shows a spark extinguishing circuit for power magnets.

The method of operating the arrangement shown in the Fig. 1 will now be described.

In the normal condition of the arrangement the condenser Q is gharged over the winding II of the impulse receiving relay A,

oil-normal contact is, winding I of A. For

each impulse to be transmitted, at a preceding connecting device earth is applied to the lead a and the winding I of the relay A is thus energized. At the same time the condenser C discharges itself over the winding II of the relay A and over the lead a to earth at the impulse contact. The winding II oi the relay A is so connected up that the magnetic field due to this discharge current of the condenser C assists the field generated by the winding I of the relay A, thus bringing about a quick operation of the lmpulse receiving relay A. If the impulse contact 1n the line-a be interrupted, the condenser C is charged over the winding I and II of the relay A. The direction of this charging current is opposite to that of the discharging current, so that an opposing magnetic field is generated by the winding II of the relay A and the impulse receiving relay A falls back quickly.

If the impulse repeater is associated With a number impulse receiver, for example group selector, the off-normal contact K is opened as soon as the switch takes the first lifting step. In order to prevent an interruption of the circuit of the winding II of the relay A and of the condenser C, the relay V is connected up over the contact a 1 at the first impulse. The relay V is made slow acting so that during each impulse train its contact 2; 1 maintains the above described circuit for the winding II of the relay A and the condenser C. The contact a 2 repeats the current impulses over the line a 1' to the succeeding connecting devices, while the contact 12 2 connects battery over the resistance to to the lead I) 1 for the switching over inthe succeeding switches. The relay B, which is located at the incoming b-lead, can serve for some steering operations, which do not concern the present invention.

Fig. 2 discloses an arrangement in which the principle of the present invention is applied to the circuit of the operating magnet of an automatic switch. Arrangements for reducing the sparking of the impulsing contacts in the circuit extending to an operating magnet in which a condenser in series with a resistance is bridged across the impulsing contacts are well known in the art. *In this arrangement the condenser becomes charged While absorbing the sparking at the impulsing contacts and dissipates its charge through the resistance which is in series. In the arrangement shown in Fig. 2 of the drawings, the resistance in the above arrangement is replaced by an inductive winding on theopcrating magnet. Thus the Winding I of magnet M is connected in series with condenser C1 and bridged across the impulsing contacts z with a ground return circuit. The impulsing contacts 11 can be directly controlled by an impulse sender or by an impulse repeating relay. The winding I of the magnet M is afiected by the charging and discharging of condenser G1 and aids in the energization and deenergization of the magnet in the same manner as has been described in connection with the explanation of Fig. 1.

What is claimed is:

1. In combination, an impulse relay having two windings connected together, one pole of battery connected to the first of said windings and the other pole of battery and a condenser connected in series with the second of said windings, and means for closing and interrupting an impulsing circuit through said first winding to cause said relay to energize and deenergize in accordance therewith, said means alsocausing said condenser to be discharged and charged thereby momentarily setting up current fiowthrough said second Winding in the proper directions to assist said first winding.

2. In combination, an impulse relay having two windings, an impulsing circuit including a conductor and the first winding of said relay in series, a condenser, a circuit for charging said condenser including the second winding of said relay, and the first .winding of said relay in series, a circuit for discharging said condenser including the second winding of said relay and said conductor, and means for closing and opening said impulsing circuit to energize and deenergize said relay in accordance therewith, said means also causing said condenser to be alternately discharged over said discharging circuit and charged over said charging circuit thereby momentarily setting up current flow through said second winding in the proper directions to assist said first windlng.

3. In combination, an impulse relay having two windings connected together, an impulsing circuit including a conductor, one winding of said relay, and one pole of battery, an auxiliary circuit including the other pole of battery a condenser, and the other winding of sai relay connected in series to said conductor, and means for closing and interrupting said impulse circuit to cause said relay to energize and deenergize in accordance therewith, said-means also causing said condenser to be alternately discharged and charged over said auxiliary circuit thereby momentarily setting up current flow through said other winding in the proper directions to assist the first winding.

4. In combination, an impulse relay having' two windings connected together, an impulsing circuit including a conductor, one winding of said relay, and one pole of battery, an auxiliary circuit including the other pole of battery, a condenser, and the other winding of said relay connected in series to said conductor, and means for closing and interrupting said impulse circuit to cause said relay to energize and-deenergize in accordance therewith, said means also causing said c0n-. denser to be alternately discharged and charged over said auxiliary circuit thereby winding of said relay, and one pole of battery, an auxiliary circuit including the other pole of battery, a condenser, and the other winding of said relay connected in series to said conductor, and means for closing and interrupting said impulse circuit to cause said relay to energize and deenergize in accordance therewith, said means also causing said condenser to be alternately discharged and charged over said auxiliary circuit thereby momentarily setting up current flow through said other winding in the proper directions to assist the first winding, the circuit for charging said condenser including the two windings of said relay in series and the circuit for discharging said condenser including said closing and interrupting means.

6. In combination, an impulse circuit comprising a conductor, a relay winding and a battery, all connected in series, and a shunt.

circuit for the relay winding and said battery including a second winding on said relay and a condenser.

7. In combination, a relay having two windings connected together, an impulse conductor connected to the junction of said windings, a battery having its opposite poles connected to the free ends of said windings, respectively, and a condenser in series with one of said windings and said battery.

8. In combination, a circuit including a conductor, a relay winding and a battery, all connected in series, means for sending impulses over said circuit to operate said relay,

and means for facilitating the response of said relay to impulses, said means compnsing a shunt circuit around the said relay winding and battery and including a second winding on said relay and a condenser.

9. In combination,a relay haylng a first and a second winding, an impulsing circuit including said first winding for alternately energizing and deenergizing said relay, a condenser in series with said second winding, and circuit arrangements such that said condenser is alternately discharged and charged through said second windin to assist in the operation and the release 0 the relay, respectively.

10. In combination, a relay having a first and a second winding, an impulsing circuit for alternately energizing and deenergizing said first winding to cause said relay to alternately attract and release its armature, a

condenser in series with said second winding, and circuit arrangements such that the efiect of the charging current of the condenser through said second winding is to oppose the first winding to cause the quick release of said armature and that the effect of the discharging current of said condenser through said second winding is to aid said first winding to cause a quick attraction of said armature.

11. In combination, a line circuit, a line relay having a first and a second winding, a condenser in series with said second winding, a charging circuit for said condenser including both of said windings in series and excluding said line circuit, and a discharging circuit for said condenser including said second winding and said line circuit and excluding said first winding.

12. In combination, a line circuit, a line relay having a first and a second winding, a condenser in series with said second WlIlCling, an impulsing circuit including said first winding, said line circuit and a remote control device for controlling the energization and deenergization of said relay, and charging and discharging circuits for said condenser controlled directly by said remote control device over said line circuit.

In witness whereof, I hereunto subscribe I1ny7name this 11th day of November, A. D.

MARTIN SI EDE. In witness whereof, I hereunto subscribe my name this eighteenth day of October, A.

FRITZ LUBBERGER. 

